Add the user-requested grid/list switch to the Playlists toolbar
(parameterized the shared ViewToggle so albums + playlists both drive it)
and a new PlaylistListRow (collage thumb + name + owner·tracks + play +
overflow menu: play/play-next/queue/favorite), bound to playlists-view-mode.
The view mode persists via favorites_prefs (playlists_view). Tauri ships
grid only — the list view is a labeled Slint-better addition.
cc
vicrodh
a75911b09b